IRM-1 Digital Insulation Resistance Tester & Megohmmeter (Meter + Multimeter)

$34.80

$34.80 ~~$0.00~~

Megohmmeter + multimeter in one — insulation testing plus full DMM (AC/DC V, R, C, Hz, diode, continuity)
Four test voltages 100/250/500/1000V; insulation up to 20GΩ with auto-ranging
19999-count True RMS backlit LCD; stable readings, ±(5%+5) accuracy (±10%+5 at 1000V)
Data hold + one-key DAR/PI for fast insulation-aging judgment
Built-in Li-ion, USB-C rechargeable (Type-C cable included); 15-min auto power-off, low-battery alert

Quantity

Safe and reliable

Encrypted SSL secured

PayPal protected Buyer protection

Estimated Delivery:Nov 14 - Nov 18
Tracked shipping · rate by parcel weight
Delivery to 9-15 business days (tracked)
Dispatched within 1–3 business days after payment is confirmed
15-day returns on unopened instruments · Refund Policy
EU orders up to €150: VAT included — nothing to pay on delivery

Overview

Technical Specification

Shipping & Return

Product reviews

Megohmmeter + DMM

The IRM-1 combines a four-voltage insulation resistance tester (100 / 250 / 500 / 1000 V, up to 20 GΩ) with a full True RMS multimeter in one body. DAR and PI diagnostics support motor and cable assessment, while the DMM side covers 1000 V DC, 750 V AC, resistance, capacitance and frequency — one instrument for both insulation testing and daily electrical work.

100–1000 V
Up to 20 GΩ
DAR / PI
True RMS DMM

IRM-1 Digital Insulation Resistance Tester & Megohmmeter (Meter + Multimeter)

Why it stands out

Megohmmeter and multimeter in oneAdds AC/DC voltage, resistance, capacitance, frequency, diode and continuity.
Four test voltages100, 250, 500 and 1000 V DC, auto-ranging up to 20 GΩ.
DAR and PI diagnosticsPolarisation index and dielectric absorption ratio for motor and cable assessment.
One tool for fieldworkCuts procurement budget and bench space.

What's in the Box

IRM-1 what is in the box

#	Accessory	Qty
1	IRM-1 meter	1
2	USB-C charging cable (Type-C)	1
3	Red & black test leads	1
4	Nylon pouch	1
5	User manual	1

Packing Details

Reference data for export and e-commerce logistics, identical to the factory packing list. Supports FBA full-container and cross-border parcel shipping.

Single-unit pack (1 pc per color/grey box)

Packaging	—
Product dimensions	15.0 × 7.5 × 3.5 cm
Product weight (with battery)	200 g (incl. built-in battery)
Battery type	Built-in Li-ion, USB-C rechargeable
Battery weight	—
Unit pack dimensions	11.5 × 16.5 × 5 cm
Unit pack weight (excl. battery)	—
Unit pack weight (incl. battery)	—

Master carton (FBA / full-container reference)

Inner box qty	1 pc / box
Outer carton qty	40 pcs / carton
Outer carton dimensions	34.5 × 47.5 × 26.5 cm (outer carton)
Outer carton weight (excl. battery)	14 kg (net)
Outer carton weight (incl. battery)	14.5 kg (gross)

Applications

Typical industries & scenarios: Ideal for insulation testing and preventive maintenance of transformers, motors, cables, switches, household and industrial appliances, plus insulation materials — covering electrical contracting, power maintenance, equipment commissioning and lab verification.

Transformer
Motor
Cable
Switch & appliance
Insulation material
Electrical maintenance

FAQ

Is IRM-1 a megohmmeter or a multimeter?

It is a 2-in-1 instrument: a digital megohmmeter with a built-in multimeter. The megohmmeter section measures insulation resistance; the multimeter section reads AC/DC voltage, resistance, capacitance, frequency, diode and continuity — two tools in one.

How large an insulation range can it measure?

By test voltage: 100V 0.001MΩ–2GΩ, 250V 0.001MΩ–5GΩ, 500V 0.001MΩ–10GΩ, 1000V 0.001MΩ–20GΩ. Accuracy is ±(5%+5) at 100–500V and ±(10%+5) at 1000V.

How do I choose the test voltage?

Select the range by the rated voltage of the equipment under test — 100V / 250V / 500V / 1000V. Press the voltage button to select the range, then press TEST to start the high-voltage output.

Can it measure absorption ratio and polarization index?

Yes. In megohmmeter mode press DAR for the absorption ratio and PI for the polarization index; the sub-display shows the ratio and elapsed time, helping judge insulation aging.

Is the battery standard? Can it be charged?

Yes, the built-in Li-ion is standard and recharges over USB-C; a Type-C charging cable is included. When the low-battery symbol appears, recharge or replace promptly; power off and remove the test leads before replacing.

What functions does the multimeter have?

DC voltage, AC voltage (True RMS), resistance, capacitance, frequency, diode and continuity. The continuity range buzzes when resistance is below 50 Ω.

Compare with other models

✓ = included, — = not included. Click a model name to open its product page. Your current model is highlighted.

Insulation Resistance Testers

Model	Test voltages	Max resistance	DAR / PI	DMM functions	Auto-ranging	Best for
IRM-1	100–1000 V (4)	20 GΩ	✓	✓	✓	Meter + multimeter combo
IT-1000	100–1000 V (4)	10 GΩ	—	—	✓	Motors, cables, switchgear
IT-2500B	500–2500 V (4)	20 GΩ	—	—	✓	High-voltage cables & transformers

Technical Specification

IRM-1 technical specifications summary

Test voltage	100V / 250V / 500V / 1000V (four selectable)
Insulation range (100V)	0.001 MΩ – 2 GΩ, ±(5%+5)
Insulation range (250V)	0.001 MΩ – 5 GΩ, ±(5%+5)
Insulation range (500V)	0.001 MΩ – 10 GΩ, ±(5%+5)
Insulation range (1000V)	0.001 MΩ – 20 GΩ, ±(10%+5)
Ranging	Auto-ranging; resolution 0.001 MΩ – 0.01 GΩ by voltage
DAR / PI	Absorption ratio (DAR) & polarization index (PI) supported
DC voltage	0.001 V – 1000.0 V, ±(0.05%+3) ~ ±(0.5%+3)
AC voltage	0.001 V – 750.0 V (True RMS), ±(0.5%+3)
Resistance	0.01 Ω – 19.99 MΩ, ±(0.3%+3) ~ ±(1%+3)
Capacitance	0.001 nF – 99.99 mF, ±(2.0%+5) ~ ±(5.0%+20)
Frequency	0.01 Hz – 999.9 kHz, ±(0.1%+2)
Diode / continuity	Supported; buzzer below 50 Ω
Data hold	Supported (HOLD)
Auto power-off	15 min idle (cancelable)

General

Display	19999-count True RMS LCD, backlit (3 samples/s)
Body material	ABS / PVC
Dimensions	150 × 75 × 35 mm
Weight	200 g (incl. built-in battery)
Battery	Built-in Li-ion, rechargeable via USB-C (Type-C)
Operating conditions	0 – 40 °C, < 75% RH
Storage conditions	−20 – 60 °C, < 80% RH
Certification	CE / RoHS
Warranty	1 year (from date of purchase)

Shipping cost

Charged by the actual weight of your parcel — not a flat worldwide rate. Add items to the cart and the exact amount is calculated at checkout.

Dispatch & delivery

Orders are processed within 1–3 business days after payment is confirmed.
Shipped with a tracked, battery-certified registered service.
Transit time depends on destination — the estimated delivery window under the buy button is calculated for your address.
Need it faster, or shipping a high-value order? Commercial express (DHL / FedEx / UPS) can be arranged on request.

Returns

Unopened instruments may be returned within 15 days of delivery. Used devices are accepted only for verified quality issues. Full terms are in our Refund Policy.